Chronology of Milestone Events in Particle Physics - BLIETSCHAU 1977B
Chronology of Milestone Events in Particle Physics

BLIETSCHAU 1977B

GARGAMELLE-neutrino collaboration; Blietschau, J. et al.
Determination of the Neutral to Charged Current Inclusive Cross Section Ratio for Neutrino and Anti-Neutrino Interactions in the "Gargamelle'' Experiment
Nucl. Phys. B118 (1977) 218;

Abstracts
The ratio of the neutral current to charged current cross sections has been measured for events with an energy of the hadron system greater than 1 GeV. These ratios are found to be R = 0.25 0.04 for and R = 0.56 0.08 for . Assuming the validity of scaling and a V and/or A type structure for the neutral current, the ratios have been corrected for the cut on the hadronic energy. Our results differ from the predictions of parity conserving models by more than 3 standard deviations. Within the framework of the Weinberg model, sin2 W is found to be 0.31 0.06 from R and 0.33+0.05-0.08 from R.

Accelerator CERN-PS Detectors HLBC-GARGA

Related references
See also
F. J. Hasert et al., Nucl. Phys. B73 (1974) 1;
F. J. Hasert et al., Phys. Lett. 46B (1973) 138;

Reactions
  nucleon X 1-10 GeV (Plab) cs
  nucleon X 1-10 GeV (Plab) cs
  nucleon X 1-10 GeV (Plab) cs
  nucleon + X 1-10 GeV (Plab) cs

Record comments
Confirmation of the existence of the weak neutral current.
    
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